Focusing grating coupler for the generation of quantum sensors
Year: 2025
Type: article
Abstract: We report the development and experimental testing of focusing grating couplers (FGCs) designed for integration with surface ion traps, aiming to advance compact ion-based technologies for next-generation quantum sensors to be used in ion frequency standards, gravimetry, and quantum computing. Through analytical calculations, we optimized the simulation and fabrication processes. Using numerical simulations, we further optimized the focusing configuration of the grating couplers to achieve a focal point approximately 210 µm above the chip surface. The fabricated focusing couplers were experimentally tested and confirmed to effectively focus laser radiation at a height of 200-210 µm above the chip surface.
Source: Optics Express
DOI: 10.1364/oe.558926
Authors: Timur Abbasov, Sergey Zibrov, Ivan Stolyarov, Nikolay Orlikovskiy, Aidar Gabidullin, Sergey Arkhipov, Anton Shishkin, Vladimir Zheltikov, Alexey Denisov, Ivan Sherstov
Institution: Skolkovo Institute of Science and Technology
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4409698197